Windows: If you have a laptop or netbook without an optical drive or if you run a business with a lot of cheap terminals without optical drives such as an internet cafe you can use the free utility Net Burner from Paragon to burn CDs/DVDs/BDs using the optical drive of another computer on your network.

The only quirk with the software is instead of a direct download link you fill out a registration card for Paragon and the download link along with the serial number and product key are sent in an email. This wasn't a dealbreaker for me and the email arrived instantly.

If you can benefit from accessing an optical burner remotely Net Burner is free, works well, and has a small footprint.